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. Author manuscript; available in PMC: 2016 Apr 1.
Published in final edited form as: Subst Use Misuse. 2015 Jan 21;50(5):674–684. doi: 10.3109/10826084.2014.998235

TABLE 2.

Bivariate comparisons between weapon aggression and non-weapon aggression groups

Bivariate comparison Weapon aggression (n = 137, 15.6%) Mean (S. E.) No weapon aggression (n = 741, 84.4%)
Individual demographics
Age 19.9 (0.20) 19.7 (0.10)
Male (%) 43.8% (4.3%) 50.3% (1.8%)
Live with parents (%) 45.9% (4.3%) 51.0% (1.8%)
African–American (%) 75.2% (3.7%) 71.0% (1.7%)
High school dropout (%) 37.2% (4.1%)b 24.7% (1.6%)b
On public assistance (%) 72.2% (3.8%) 75.1% (1.6%)
At ED for violent injury (%) 69.3% (4.0%)a 52.9% (1.8%)a
Individual drug use
Alcohol misuse (%) 29.2% (3.9%)b 16.9% (1.4%)b
Marijuana misuse (%) 63.5% (4.1%)a 37.7% (1.8%)a
Other illicit drug misuse (%) 7.3% (2.2%) 2.6% (0.6%)
Prescription drug misuse (%) 10.9% (2.7%)c 5.3% (0.9%)c
Community demographics
African–American (%) 69.2% (2.6%) 66.4% (1.2%)
Vacant housing (%) 24.2% (0.8%) 23.4% (0.4%)
Female head of house (%) 36.7% (1.3%) 34.5% (0.5%)
Under 18 (%) 30.8% (0.7%) 29.6% (0.3%)
Alcohol outlets/crime
# Package outlets 1/4 mile 0.82 (0.08) 0.87(0.03)
# On-premises outlets 1/4 mile 0.20 (0.05)c 0.38 (0.04)c
# Drug crimes 1/4 mile 3.17 (0.24) 3.29 (0.12)
# Violent crimes 1/4 mile 51.99 (1.88) 47.52 (0.76)
a

p < .001,

b

p < .01,

c

p < .05.